Commodity2005200620072008200920102011
Hydrogen$4,267$1,509$3,149$4,251$4,114  
Argon$8,930$19,964$15,313$17,060$20,525$16,331 
Rare gases other than argon$6,808$4,388$12,659$8,976$18,444  
Nitrogen$30,168$27,515$31,711$53,309$69,080$222,124$315,033
Oxygen$429,781$441,916$456,291$358,416$224,639$241,885$253,857
Boron; tellurium $3,076     
Silicon, cont. by wt. not <99.99% of silicon$772      
Selenium$66,783      
Total$547,509$498,368$519,123$442,012$336,802$480,340$568,890